Mike-Solar
4babbf5de8
oak-common is gone; its modules (configstore, xmlutils, ocioutils,
oiioutils, colormath, colortransform, videoparams, ffmpegutils, ...)
now live in oak-core alongside the value types. The render value/GPU
types moved too: backend (wgpu context + DisplayRenderer), color
(ColorProcessor over ocio-rs), texture, frame, and the commonutil
config helpers.
Fix-ups to make the merged tree build and pass tests:
- oak-core Cargo.toml: wgpu back to 25 (the moved backend code is
written against that API generation); add the toml/quick-xml/image
deps oak-common carried.
- lib.rs: drop the duplicate 'pub mod error;'.
- error.rs: unified OAKCORE_* codes; restore Error::new() and
From<OcioError> from oak-common's error type.
- backend.rs/color.rs: oak_core::/oak_render:: self-references
rewritten to crate::; the shaderfx-dependent GPU effect test moved
to oak-render's shaderfx tests (shaderfx depends on oak-node and
cannot live in oak-core).
- oak-render's error module re-exports oak_core::error::{Error,
Result}; the OAKRENDER_* codes stay as the public-code contract.
- oak-node jobs.rs: ColorProcessor imported from oak_core::color.
- Integration tests repointed at oak_core::{texture, frame, backend,
color, colormath}.
- the display-ICC regression test treats an empty OAK_DISPLAY_ICC as
unset, matching displayicc::env_override_icc.
697 lines
22 KiB
Rust
697 lines
22 KiB
Rust
// Oak Video Editor - Non-Linear Video Editor
|
||
// Copyright (C) 2026 Oak Team
|
||
//
|
||
// This program is free software: you can redistribute it and/or modify
|
||
// it under the terms of the GNU General Public License as published by
|
||
// the Free Software Foundation, either version 3 of the License, or
|
||
// (at your option) any later version.
|
||
//
|
||
// This program is distributed in the hope that it will be useful,
|
||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
// GNU General Public License for more details.
|
||
//
|
||
// You should have received a copy of the GNU General Public License
|
||
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
//! `ProxyTask`, mirroring `src/task/src/proxy/proxy.h`.
|
||
//!
|
||
//! Transcodes a video stream to a proxy via an external `ffmpeg` process
|
||
//! (oakcodec kind `OAKCODEC_TASK_PROXY`). The two pure functions
|
||
//! [`ProxyTask::build_arguments`] and [`ProxyTask::parse_progress`] are
|
||
//! parity/golden candidates (see tests/parity_test.rs).
|
||
//!
|
||
//! CPP-PARITY: src/task/src/proxy/proxy.h
|
||
|
||
use std::io::{BufRead, BufReader};
|
||
use std::process::{Command, Stdio};
|
||
|
||
use oak_codec::proxymanager::ProxyManager;
|
||
use oak_codec::task::TaskRequest;
|
||
|
||
use crate::error::{Error, Result};
|
||
use crate::task::{Task, TaskBehavior};
|
||
|
||
/// The proxy parameters, mirroring `oakcodec_proxy_params` in
|
||
/// `include/codec/proxy.h` (kept as plain fields so no oakcodec handle is
|
||
/// needed to build arguments).
|
||
pub struct ProxyParams {
|
||
/// Target width (0 = unspecified/divider-based).
|
||
pub width: i32,
|
||
/// Target height (0 = unspecified/divider-based).
|
||
pub height: i32,
|
||
/// Resolution divider.
|
||
pub divider: i32,
|
||
/// Proxy format version.
|
||
pub version: i32,
|
||
/// CRF for the proxy encode.
|
||
pub crf: i32,
|
||
/// Whether audio is included in the proxy.
|
||
pub include_audio: bool,
|
||
/// Output container extension.
|
||
pub extension: String,
|
||
/// ffmpeg preset name.
|
||
pub preset: String,
|
||
}
|
||
|
||
/// A proxy transcode task: runs `ffmpeg` with arguments from
|
||
/// [`ProxyTask::build_arguments`], parsing progress lines via
|
||
/// [`ProxyTask::parse_progress`].
|
||
pub struct ProxyTask {
|
||
/// The shared task base.
|
||
pub base: Task,
|
||
/// Source media filename.
|
||
pub source_filename: String,
|
||
/// Target stream index.
|
||
pub stream_index: i32,
|
||
/// Proxy parameters.
|
||
pub params: ProxyParams,
|
||
/// Output proxy filename.
|
||
pub output_filename: String,
|
||
/// Total media duration in seconds (for progress scaling).
|
||
duration_seconds: f64,
|
||
}
|
||
|
||
/// 代理转码的编码器选择（按平台优先级探测到的第一个硬件编码器，
|
||
/// 否则软件 x264）。
|
||
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
||
pub enum HwEncoder {
|
||
/// macOS VideoToolbox（`-c:v h264_videotoolbox`）。
|
||
VideoToolbox,
|
||
/// NVIDIA NVENC（Windows/Linux，`-c:v h264_nvenc`）。
|
||
Nvenc,
|
||
/// Intel QuickSync（`-c:v h264_qsv`）。
|
||
Qsv,
|
||
/// AMD AMF（`-c:v h264_amf`）。
|
||
Amf,
|
||
/// 软件 libx264（C++ 路径）。
|
||
Software,
|
||
}
|
||
|
||
impl ProxyTask {
|
||
/// Build a proxy task from an oakcodec request and proxy params,
|
||
/// mirroring the C++ constructor (divider-based requests take the source
|
||
/// fraction).
|
||
pub fn new(request: &TaskRequest, params: ProxyParams) -> ProxyTask {
|
||
let mut params = params;
|
||
if request.proxy_width > 0 && request.proxy_height > 0 {
|
||
params.width = request.proxy_width;
|
||
params.height = request.proxy_height;
|
||
params.divider = 1;
|
||
}
|
||
let title = format!(
|
||
"Generating Proxy {}:{}",
|
||
request.input_filename, request.stream_index
|
||
);
|
||
ProxyTask {
|
||
base: Task::new(&title, None),
|
||
source_filename: request.input_filename.to_string(),
|
||
stream_index: request.stream_index,
|
||
params,
|
||
output_filename: request.output_filename.to_string(),
|
||
duration_seconds: 0.0,
|
||
}
|
||
}
|
||
|
||
/// Build the `ffmpeg` command-line argument vector for the proxy
|
||
/// transcode. Mirrors `build_arguments` in proxy.cpp; the exact ordering
|
||
/// and flag spelling are parity-locked (golden test).
|
||
///
|
||
/// CPP-PARITY: src/task/src/proxy/proxy.cpp (build_arguments)
|
||
pub fn build_arguments(
|
||
source_filename: &str,
|
||
stream_index: i32,
|
||
params: &ProxyParams,
|
||
output_filename: &str,
|
||
) -> Vec<String> {
|
||
let scale_filter = if params.divider > 1 {
|
||
format!(
|
||
"scale=w=trunc(iw/{}/2)*2:h=trunc(ih/{}/2)*2",
|
||
params.divider, params.divider
|
||
)
|
||
} else {
|
||
format!(
|
||
"scale=w={}:h={}:force_original_aspect_ratio=decrease",
|
||
params.width, params.height
|
||
)
|
||
};
|
||
|
||
let container_format = if params.extension.is_empty() {
|
||
"mp4".to_string()
|
||
} else {
|
||
params.extension.clone()
|
||
};
|
||
|
||
let mut args: Vec<String> = vec![
|
||
"-y".to_string(),
|
||
"-nostats".to_string(),
|
||
"-progress".to_string(),
|
||
"pipe:1".to_string(),
|
||
"-i".to_string(),
|
||
source_filename.to_string(),
|
||
"-map".to_string(),
|
||
format!("0:{stream_index}"),
|
||
];
|
||
|
||
if params.include_audio {
|
||
args.extend([
|
||
"-map".to_string(),
|
||
"0:a?".to_string(),
|
||
"-c:a".to_string(),
|
||
"aac".to_string(),
|
||
"-b:a".to_string(),
|
||
"128k".to_string(),
|
||
]);
|
||
} else {
|
||
args.push("-an".to_string());
|
||
}
|
||
|
||
args.extend([
|
||
"-vf".to_string(),
|
||
scale_filter,
|
||
"-c:v".to_string(),
|
||
"libx264".to_string(),
|
||
"-preset".to_string(),
|
||
params.preset.clone(),
|
||
"-crf".to_string(),
|
||
params.crf.to_string(),
|
||
"-pix_fmt".to_string(),
|
||
"yuv420p".to_string(),
|
||
"-movflags".to_string(),
|
||
"+faststart".to_string(),
|
||
"-f".to_string(),
|
||
container_format,
|
||
output_filename.to_string(),
|
||
]);
|
||
|
||
args
|
||
}
|
||
|
||
// ---- 硬件加速与资源控制 --------------------------------------------------
|
||
//
|
||
// build_arguments 是 C++ 纯软件路径（parity 锁定，不动）；实际转码走
|
||
// [`ProxyTask::build_transcode_arguments`]：能用硬件编码器就一定用
|
||
// （macOS VideoToolbox；Windows/Linux 的 NVENC/QSV/AMF；探测不到回退
|
||
// libx264），解码侧 `-hwaccel auto`（HEVC 4:2:2 10-bit 在
|
||
// Apple Silicon、RTX 50 系+、Intel 显卡上都能硬解；硬解失败 ffmpeg
|
||
// 自动回退软解）。
|
||
|
||
/// 探测本机可用的硬件 H.264 编码器（每进程每 ffmpeg 路径缓存一次：
|
||
/// `ffmpeg -hide_banner -encoders` 的输出里按平台优先级找）。
|
||
pub fn probe_hw_encoder(ffmpeg_path: &str) -> HwEncoder {
|
||
static CACHE: std::sync::OnceLock<std::sync::Mutex<std::collections::HashMap<String, HwEncoder>>> =
|
||
std::sync::OnceLock::new();
|
||
let cache = CACHE.get_or_init(|| std::sync::Mutex::new(std::collections::HashMap::new()));
|
||
let mut cache = cache.lock().unwrap_or_else(|e| e.into_inner());
|
||
if let Some(enc) = cache.get(ffmpeg_path) {
|
||
return *enc;
|
||
}
|
||
let enc = Self::probe_hw_encoder_uncached(ffmpeg_path);
|
||
cache.insert(ffmpeg_path.to_string(), enc);
|
||
enc
|
||
}
|
||
|
||
fn probe_hw_encoder_uncached(ffmpeg_path: &str) -> HwEncoder {
|
||
let out = Command::new(ffmpeg_path)
|
||
.args(["-hide_banner", "-encoders"])
|
||
.output();
|
||
let Ok(out) = out else {
|
||
return HwEncoder::Software;
|
||
};
|
||
let text = String::from_utf8_lossy(&out.stdout);
|
||
let has = |name: &str| text.contains(name);
|
||
// 平台优先级：macOS 只走 VideoToolbox；Windows NVENC → QSV →
|
||
// AMF；Linux NVENC → QSV → AMF（VAAPI 需要 hwupload 帧上传链，
|
||
// 暂不支持，回退软件）。
|
||
let preference: &[(&str, HwEncoder)] = if cfg!(target_os = "macos") {
|
||
&[("h264_videotoolbox", HwEncoder::VideoToolbox)]
|
||
} else {
|
||
&[
|
||
("h264_nvenc", HwEncoder::Nvenc),
|
||
("h264_qsv", HwEncoder::Qsv),
|
||
("h264_amf", HwEncoder::Amf),
|
||
]
|
||
};
|
||
for (name, enc) in preference {
|
||
if has(name) {
|
||
return *enc;
|
||
}
|
||
}
|
||
HwEncoder::Software
|
||
}
|
||
|
||
/// libx264 预设名 → NVENC p1..p7（NVENC 预设是编号）。
|
||
fn nvenc_preset(preset: &str) -> &'static str {
|
||
match preset {
|
||
"ultrafast" => "p1",
|
||
"superfast" => "p2",
|
||
"veryfast" => "p3",
|
||
"faster" => "p4",
|
||
"fast" => "p5",
|
||
"medium" => "p6",
|
||
_ => "p7",
|
||
}
|
||
}
|
||
|
||
/// libx264 预设名 → AMF quality 档。
|
||
fn amf_quality(preset: &str) -> &'static str {
|
||
match preset {
|
||
"ultrafast" | "superfast" | "veryfast" | "faster" | "fast" => "speed",
|
||
"medium" => "balanced",
|
||
_ => "quality",
|
||
}
|
||
}
|
||
|
||
/// The video-codec arguments for `enc` (quality mapped from the
|
||
/// proxy CRF: NVENC `-cq`、QSV `-global_quality`、AMF `-qp_i/-qp_p`
|
||
/// 与 CRF 同刻度直接用；VideoToolbox 用 qscale 语义 `-q:v`）。
|
||
fn hw_video_args(enc: HwEncoder, params: &ProxyParams) -> Vec<String> {
|
||
match enc {
|
||
HwEncoder::VideoToolbox => vec![
|
||
"-c:v".to_string(),
|
||
"h264_videotoolbox".to_string(),
|
||
"-q:v".to_string(),
|
||
params.crf.to_string(),
|
||
],
|
||
HwEncoder::Nvenc => vec![
|
||
"-c:v".to_string(),
|
||
"h264_nvenc".to_string(),
|
||
"-preset".to_string(),
|
||
Self::nvenc_preset(¶ms.preset).to_string(),
|
||
"-cq".to_string(),
|
||
params.crf.to_string(),
|
||
],
|
||
HwEncoder::Qsv => vec![
|
||
"-c:v".to_string(),
|
||
"h264_qsv".to_string(),
|
||
"-global_quality".to_string(),
|
||
params.crf.to_string(),
|
||
],
|
||
HwEncoder::Amf => vec![
|
||
"-c:v".to_string(),
|
||
"h264_amf".to_string(),
|
||
"-quality".to_string(),
|
||
Self::amf_quality(¶ms.preset).to_string(),
|
||
"-rc".to_string(),
|
||
"cqp".to_string(),
|
||
"-qp_i".to_string(),
|
||
params.crf.to_string(),
|
||
"-qp_p".to_string(),
|
||
params.crf.to_string(),
|
||
],
|
||
HwEncoder::Software => vec![
|
||
"-c:v".to_string(),
|
||
"libx264".to_string(),
|
||
"-preset".to_string(),
|
||
params.preset.clone(),
|
||
"-crf".to_string(),
|
||
params.crf.to_string(),
|
||
],
|
||
}
|
||
}
|
||
|
||
/// 实际转码用的参数：build_arguments 的软件路径 + 硬件加速与线程
|
||
/// 控制（解码 `-hwaccel auto`；编码按探测结果；`-threads` 限制
|
||
/// 解码/编码线程——后台任务不把机器打满）。
|
||
pub fn build_transcode_arguments(
|
||
source_filename: &str,
|
||
stream_index: i32,
|
||
params: &ProxyParams,
|
||
output_filename: &str,
|
||
enc: HwEncoder,
|
||
threads: i32,
|
||
) -> Vec<String> {
|
||
// 软件路径直接复用 parity 参数，仅在最前面加解码 hwaccel 与
|
||
// 线程数（不改变 C++ 的参数顺序语义之外的任何东西）。
|
||
let base = Self::build_arguments(source_filename, stream_index, params, output_filename);
|
||
let mut args: Vec<String> = vec!["-y".to_string(), "-nostats".to_string()];
|
||
if threads > 0 {
|
||
args.extend(["-threads".to_string(), threads.to_string()]);
|
||
}
|
||
args.extend(["-hwaccel".to_string(), "auto".to_string()]);
|
||
// base 以 -y -nostats 开头，跳过这两个，余下的按序接上；编码
|
||
// 器参数（-c:v 起）在 hw 时整段替换。
|
||
let mut rest = base[2..].to_vec();
|
||
if enc != HwEncoder::Software {
|
||
// 找到 "-c:v libx264" 段（-c:v 起到 -pix_fmt 前），换成 hw 参数。
|
||
if let Some(cv) = rest.iter().position(|a| a == "-c:v") {
|
||
let end = rest[cv..]
|
||
.iter()
|
||
.position(|a| a == "-pix_fmt")
|
||
.map(|p| cv + p)
|
||
.unwrap_or(rest.len());
|
||
rest.splice(cv..end, Self::hw_video_args(enc, params));
|
||
}
|
||
}
|
||
args.append(&mut rest);
|
||
args
|
||
}
|
||
|
||
/// 代理转码并发上限的配置键（Proxy Settings 对话框可调；
|
||
/// 默认 1——后台任务不给系统造成压力）。
|
||
pub const CONFIG_KEY_PROXY_MAX_CONCURRENT: &str = "ProxyMaxConcurrent";
|
||
|
||
/// 配置的代理转码并发上限（[1, 16]）。
|
||
pub fn proxy_max_concurrent() -> i32 {
|
||
oak_core::configstore::ConfigStore::instance()
|
||
.get_int(None, Self::CONFIG_KEY_PROXY_MAX_CONCURRENT, 1)
|
||
.clamp(1, 16)
|
||
}
|
||
|
||
/// 后台转码的线程预算（不变式：并发数 × 每任务线程数 ≤
|
||
/// 逻辑处理器数的一半——机器永远留一半以上给前台）。`concurrent`
|
||
/// 是当前的并发上限配置。
|
||
pub fn transcode_thread_budget(concurrent: i32) -> i32 {
|
||
let cores = std::thread::available_parallelism()
|
||
.map(|n| n.get())
|
||
.unwrap_or(2) as i32;
|
||
let half = (cores / 2).max(1);
|
||
(half / concurrent.max(1)).clamp(1, 8)
|
||
}
|
||
|
||
/// Parse a single `ffmpeg -progress` output line into a progress value in
|
||
/// 0.0..=1.0 given the total duration. Mirrors `parse_progress` in
|
||
/// proxy.cpp (golden test).
|
||
///
|
||
/// CPP-PARITY: src/task/src/proxy/proxy.cpp (parse_progress)
|
||
pub fn parse_progress(line: &str, duration_seconds: f64) -> Option<f64> {
|
||
if duration_seconds <= 0.0 {
|
||
return None;
|
||
}
|
||
|
||
let out_time_us: i64 = if let Some(rest) = line.strip_prefix("out_time_us=") {
|
||
rest.trim().parse().unwrap_or(-1)
|
||
} else if let Some(rest) = line.strip_prefix("out_time_ms=") {
|
||
// Despite the name, ffmpeg reports this value in microseconds.
|
||
rest.trim().parse().unwrap_or(-1)
|
||
} else {
|
||
-1
|
||
};
|
||
|
||
if out_time_us < 0 {
|
||
return None;
|
||
}
|
||
|
||
let progress = out_time_us as f64 / 1_000_000.0 / duration_seconds;
|
||
Some(if progress < 0.0 {
|
||
0.0
|
||
} else if progress > 1.0 {
|
||
1.0
|
||
} else {
|
||
progress
|
||
})
|
||
}
|
||
}
|
||
|
||
impl TaskBehavior for ProxyTask {
|
||
/// Spawn `ffmpeg` with the built arguments, feed `-progress` lines to
|
||
/// [`ProxyTask::parse_progress`] and emit them as task progress.
|
||
fn run(&mut self, task: &mut Task) -> Result<()> {
|
||
// Direct call into oakcodec's proxy manager (single-lib
|
||
// unification: the old two-stage C ABI getter is gone; an empty
|
||
// string means "not found"). The `FFmpegPath` config takes
|
||
// precedence when set (C++ `OAK_CONFIG("FFmpegPath")`).
|
||
let configured = oak_core::configstore::ConfigStore::instance()
|
||
.get(None, "FFmpegPath")
|
||
.unwrap_or_default();
|
||
let ffmpeg_path = ProxyManager::find_ffmpeg(&configured);
|
||
if ffmpeg_path.is_empty() {
|
||
task.set_error(
|
||
"Failed to generate proxy: ffmpeg executable was not found. Set the ffmpeg path in Preferences > Disk > Proxy Settings.",
|
||
);
|
||
return Err(Error::Failed("ffmpeg executable was not found".to_string()));
|
||
}
|
||
|
||
// Create the output directory if needed.
|
||
if let Some(parent) = std::path::Path::new(&self.output_filename).parent() {
|
||
if !parent.as_os_str().is_empty() && !parent.exists() {
|
||
if std::fs::create_dir_all(parent).is_err() {
|
||
task.set_error("Failed to create proxy output directory");
|
||
return Err(Error::Failed(
|
||
"Failed to create proxy output directory".to_string(),
|
||
));
|
||
}
|
||
}
|
||
}
|
||
|
||
let _ = std::fs::remove_file(&self.output_filename);
|
||
let working_filename = format!("{}.working.mp4", self.output_filename);
|
||
let _ = std::fs::remove_file(&working_filename);
|
||
|
||
// 硬件加速（能用硬编就一定用；探测不到回退 libx264）+ 线程
|
||
// 预算（后台任务不把机器打满）。
|
||
let encoder = Self::probe_hw_encoder(&ffmpeg_path);
|
||
let threads = Self::transcode_thread_budget(Self::proxy_max_concurrent());
|
||
let args = Self::build_transcode_arguments(
|
||
&self.source_filename,
|
||
self.stream_index,
|
||
&self.params,
|
||
&working_filename,
|
||
encoder,
|
||
threads,
|
||
);
|
||
|
||
// Probe the source duration for progress scaling (0 when unknown).
|
||
self.duration_seconds = probe_source_duration_seconds(&ffmpeg_path, &self.source_filename);
|
||
|
||
// Unix 上降优先级跑（nice 10：代理是后台任务，不能和前台
|
||
// 抢系统）；Windows 没有 nice，线程预算已限制占用。
|
||
#[cfg(unix)]
|
||
let mut command = {
|
||
let mut c = Command::new("nice");
|
||
c.arg("-n").arg("10").arg(&ffmpeg_path);
|
||
c
|
||
};
|
||
#[cfg(not(unix))]
|
||
let mut command = Command::new(&ffmpeg_path);
|
||
command
|
||
.args(&args)
|
||
.stdout(Stdio::piped())
|
||
.stderr(Stdio::piped());
|
||
let mut child = match command.spawn() {
|
||
Ok(child) => child,
|
||
Err(_) => {
|
||
task.set_error("Failed to start ffmpeg for proxy generation");
|
||
return Err(Error::Failed("Failed to start ffmpeg".to_string()));
|
||
}
|
||
};
|
||
|
||
// Drain stderr in a thread so a chatty ffmpeg cannot block us.
|
||
let stderr = child.stderr.take();
|
||
if let Some(stderr) = stderr {
|
||
std::thread::spawn(move || {
|
||
let _ = BufReader::new(stderr).lines().count();
|
||
});
|
||
}
|
||
|
||
let stdout = child.stdout.take();
|
||
let mut last_progress = 0.0_f64;
|
||
if let Some(stdout) = stdout {
|
||
let reader = BufReader::new(stdout);
|
||
for line in reader.lines() {
|
||
match line {
|
||
Ok(line) => {
|
||
if let Some(progress) = Self::parse_progress(&line, self.duration_seconds) {
|
||
if progress >= 0.0 && progress - last_progress > 0.001 {
|
||
last_progress = progress;
|
||
task.emit_progress(progress);
|
||
}
|
||
}
|
||
}
|
||
Err(_) => break,
|
||
}
|
||
if task.is_cancelled() {
|
||
let _ = child.kill();
|
||
let _ = child.wait();
|
||
let _ = std::fs::remove_file(&working_filename);
|
||
task.set_error("Proxy generation was cancelled");
|
||
return Err(Error::Cancelled);
|
||
}
|
||
}
|
||
}
|
||
|
||
let exit_status = child.wait();
|
||
if !matches!(exit_status, Ok(status) if status.success()) {
|
||
let _ = std::fs::remove_file(&working_filename);
|
||
task.set_error("ffmpeg failed to generate proxy");
|
||
return Err(Error::Failed("ffmpeg failed to generate proxy".to_string()));
|
||
}
|
||
|
||
if !std::path::Path::new(&working_filename).exists() {
|
||
task.set_error("ffmpeg finished but proxy file was not created");
|
||
return Err(Error::Failed(
|
||
"ffmpeg finished but proxy file was not created".to_string(),
|
||
));
|
||
}
|
||
|
||
if std::fs::rename(&working_filename, &self.output_filename).is_err() {
|
||
task.set_error("Failed to move proxy into place");
|
||
return Err(Error::Failed("Failed to move proxy into place".to_string()));
|
||
}
|
||
|
||
task.emit_progress(1.0);
|
||
Ok(())
|
||
}
|
||
}
|
||
|
||
/// Probe the source duration via `ffprobe` next to ffmpeg; 0.0 when
|
||
/// unavailable (in which case no intermediate progress is reported).
|
||
fn probe_source_duration_seconds(ffmpeg_path: &str, source_filename: &str) -> f64 {
|
||
let ffprobe = std::path::Path::new(ffmpeg_path).with_file_name("ffprobe");
|
||
if !ffprobe.exists() {
|
||
return 0.0;
|
||
}
|
||
let output = Command::new(&ffprobe)
|
||
.args([
|
||
"-v",
|
||
"error",
|
||
"-show_entries",
|
||
"format=duration",
|
||
"-of",
|
||
"default=noprint_wrappers=1:nokey=1",
|
||
source_filename,
|
||
])
|
||
.output();
|
||
match output {
|
||
Ok(out) if out.status.success() => {
|
||
let text = String::from_utf8_lossy(&out.stdout);
|
||
text.trim().parse().unwrap_or(0.0)
|
||
}
|
||
_ => 0.0,
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
fn params() -> ProxyParams {
|
||
ProxyParams {
|
||
width: 1280,
|
||
height: 720,
|
||
divider: 1,
|
||
version: 1,
|
||
crf: 23,
|
||
include_audio: true,
|
||
extension: "mp4".to_string(),
|
||
preset: "veryfast".to_string(),
|
||
}
|
||
}
|
||
|
||
/// 软件路径 = parity 参数 + 解码 hwaccel/线程前缀；编码器参数
|
||
/// 原样（libx264 + preset + crf）。
|
||
#[test]
|
||
fn transcode_arguments_software_keeps_parity_body() {
|
||
let args = ProxyTask::build_transcode_arguments(
|
||
"/src.mov", 0, ¶ms(), "/dst.mp4", HwEncoder::Software, 4,
|
||
);
|
||
assert!(args.windows(2).any(|w| w == ["-hwaccel", "auto"]));
|
||
assert!(args.windows(2).any(|w| w == ["-threads", "4"]));
|
||
assert!(args.windows(2).any(|w| w == ["-c:v", "libx264"]));
|
||
assert!(args.windows(2).any(|w| w == ["-crf", "23"]));
|
||
// -threads/-hwaccel 在 -i 之前（解码侧选项）。
|
||
let i_pos = args.iter().position(|a| a == "-i").unwrap();
|
||
let hw_pos = args.iter().position(|a| a == "-hwaccel").unwrap();
|
||
assert!(hw_pos < i_pos);
|
||
}
|
||
|
||
/// 硬件编码器整段替换 -c:v 段（不再出现 libx264/crf），各自的
|
||
/// 质量/预设映射正确。
|
||
#[test]
|
||
fn transcode_arguments_hw_swaps_encoder() {
|
||
let vt = ProxyTask::build_transcode_arguments(
|
||
"/src.mov", 0, ¶ms(), "/dst.mp4", HwEncoder::VideoToolbox, 4,
|
||
);
|
||
assert!(vt.windows(2).any(|w| w == ["-c:v", "h264_videotoolbox"]));
|
||
assert!(vt.windows(2).any(|w| w == ["-q:v", "23"]));
|
||
assert!(!vt.iter().any(|a| a == "libx264" || a == "-crf"));
|
||
|
||
let nv = ProxyTask::build_transcode_arguments(
|
||
"/src.mov", 0, ¶ms(), "/dst.mp4", HwEncoder::Nvenc, 4,
|
||
);
|
||
assert!(nv.windows(2).any(|w| w == ["-c:v", "h264_nvenc"]));
|
||
assert!(nv.windows(2).any(|w| w == ["-preset", "p3"]));
|
||
assert!(nv.windows(2).any(|w| w == ["-cq", "23"]));
|
||
|
||
let qsv = ProxyTask::build_transcode_arguments(
|
||
"/src.mov", 0, ¶ms(), "/dst.mp4", HwEncoder::Qsv, 4,
|
||
);
|
||
assert!(qsv.windows(2).any(|w| w == ["-c:v", "h264_qsv"]));
|
||
assert!(qsv.windows(2).any(|w| w == ["-global_quality", "23"]));
|
||
|
||
let amf = ProxyTask::build_transcode_arguments(
|
||
"/src.mov", 0, ¶ms(), "/dst.mp4", HwEncoder::Amf, 4,
|
||
);
|
||
assert!(amf.windows(2).any(|w| w == ["-c:v", "h264_amf"]));
|
||
assert!(amf.windows(2).any(|w| w == ["-quality", "speed"]));
|
||
// -pix_fmt/-movflags 等后续段在替换后仍然保留。
|
||
assert!(vt.windows(2).any(|w| w == ["-pix_fmt", "yuv420p"]));
|
||
}
|
||
|
||
/// 线程预算不变式：并发 × 线程 ≤ 逻辑处理器数一半；区间 [1, 8]。
|
||
#[test]
|
||
fn transcode_thread_budget_invariant() {
|
||
let cores = std::thread::available_parallelism()
|
||
.map(|n| n.get())
|
||
.unwrap_or(2) as i32;
|
||
let half = (cores / 2).max(1);
|
||
for concurrent in [1, 2, 4, 8, 16] {
|
||
let b = ProxyTask::transcode_thread_budget(concurrent);
|
||
assert!((1..=8).contains(&b));
|
||
assert!(
|
||
b * concurrent <= half.max(1) || b == 1,
|
||
"concurrency {concurrent} x threads {b} exceeds half of {cores} cores"
|
||
);
|
||
}
|
||
// 并发为 1 时独占一半核。
|
||
assert_eq!(ProxyTask::transcode_thread_budget(1), half.clamp(1, 8));
|
||
}
|
||
|
||
/// End-to-end: transcode a real 4K H.265 4:2:2 10-bit file (the
|
||
/// class of media the 4K playback lag was reported on) to a 720p
|
||
/// proxy. Skipped when the fixture or ffmpeg is missing.
|
||
#[test]
|
||
fn proxy_task_transcodes_hevc_422_10bit() {
|
||
let src = "/tmp/oakperf/hevc422-4k.mp4";
|
||
if !std::path::Path::new(src).exists() {
|
||
eprintln!("fixture missing; skipping");
|
||
return;
|
||
}
|
||
let ffmpeg = ProxyManager::find_ffmpeg("");
|
||
if ffmpeg.is_empty() {
|
||
eprintln!("ffmpeg not found; skipping");
|
||
return;
|
||
}
|
||
let out = "/tmp/oakperf/proxy-720p.mp4";
|
||
let _ = std::fs::remove_file(out);
|
||
let request = oak_codec::task::TaskRequest {
|
||
kind: oak_codec::task::TaskKind::Proxy,
|
||
input_filename: src,
|
||
output_filename: out,
|
||
stream_index: 0,
|
||
sample_rate: 0,
|
||
channel_layout: 0,
|
||
sample_format: 0,
|
||
proxy_width: 1280,
|
||
proxy_height: 720,
|
||
};
|
||
let params = ProxyParams {
|
||
width: 1280,
|
||
height: 720,
|
||
divider: 1,
|
||
version: 1,
|
||
crf: 23,
|
||
include_audio: true,
|
||
extension: "mp4".to_string(),
|
||
preset: "veryfast".to_string(),
|
||
};
|
||
let mut proxy_task = ProxyTask::new(&request, params);
|
||
let mut task = Task::new("probe", None);
|
||
proxy_task
|
||
.run(&mut task)
|
||
.expect("the proxy transcode succeeds on 4K HEVC 4:2:2 10-bit");
|
||
let meta = std::fs::metadata(out).expect("the proxy file exists");
|
||
assert!(meta.len() > 0, "the proxy file is non-empty");
|
||
}
|
||
}
|